Cretaceousbuthus Lourenço, 2022,

Genus Cretaceousbuthus Lourenço, 2022 gen. n.

ZooBank:http://zoobank.org/ 1F437D8C-DD4D-4DC5-9253-4A752947A67C

Diagnosis for the new genus. – General morphology is globally similar to that of several genera of extant buthoid scorpions and with at least two genera of buthoids previously found in Burmite, namely Archaeoananteroides Lourenço, 2016 and Spinoburmesebuthus Lourenço, 2017 .A combination of characters can however, be used to diagnose the new genus from these two buthoid genera also found in Burmite: a rather large global size compared to all the other scorpions previously found in Burmite with an estimated total length ranging from 45 to 60 mm (see measurements and comments on size after the description). The specimen is rather bulk with short pedipalps. Carapace weakly granulated to smooth; anterior margin with a deep concavity. Three pairs of lateral eyes. Sternum sub-pentagonal to almost triangular. Tergites with one median carinae; lateral carinae inconspicuous. Sternites with large slit-like spiracles. Metasomal segment I with 10 carinae; other metasomal segments not present. Chelae not present. Trichobothrial pattern similar to that of extant buthid type A (Vachon 1974); the dorsal trichobothria of femur presenting a beta disposition (Vachon, 1975).Femur orthobothriotaxic with 4 internal, 5 dorsal and 2 external trichobothria; d 5 and e 1 at the same level. Patella minorante neobothriotaxic with 1 internal, dorsal d 1 and d 2, but absence of d 3, d 4 and d 5; Seven external trichobothria are clearly visible, thanks to the transparency of the piece: et, est, em, esb 1,2 and eb 1,2. Ventral trichobothria absent. Tibial spurs present on legs III and IV, small in size. Pedal spurs present in all legs.

Etymology. – Generic name refers to the association of Cretaceous horizon and the extant genus Buthus .

Type species. - Cretaceousbuthus fraaijeorum Lourenço, 2022 sp. n.